Meatballs from the same batch had been sent from a Swedish supplier to 12 other European countries — Slovakia, Hungary, France, Britain, Portugal, the Netherlands, Belgium, Spain, Italy, Greece, Cyprus, and Ireland — and would be pulled off the shelves in all of them, Ikea said.

Later Monday, the company expanded the withdrawals to stores in 21 European countries and in Hong Kong, Thailand, and the Dominican Republic, all of which were getting meatballs from the same Swedish supplier.

Ikea spokeswoman Ylva Magnusson said that included most European countries, but not Russia and Norway, which use local suppliers. Stores in Poland and Switzerland use both local suppliers and the Swedish one, but would now only use locally produced meatballs, she said.

‘‘This is an extraordinary effort to ensure that no one is worried,’’ Magnusson said.

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She added that two weeks ago Ikea tested a range of frozen food products, including meatballs, and found no traces of horse meat. The company plans to conduct its own tests to ‘‘validate’’ the Czech results, she said.

Ikea’s North America branch said the US stores get their meatballs from a US supplier.

‘‘Based on the results of our mapping, we can confirm that the contents of the meatballs follow the Ikea recipe and contain only beef and pork from animals raised in the US and Canada,’’ Ikea North America spokeswoman Mona Astra Liss said in a statement.

Ikea is known for its assemble-it-yourself furniture but its trademark blue-and-yellow mega­stores also have cafeteria-style restaurants offering Swedish dishes such as meatballs served with boiled or mashed potatoes, gravy, and lingonberry jam.

European Union officials met Monday to discuss tougher food labeling rules after the discovery of horse meat in a wide range of frozen supermarket meals that were supposed to contain beef or pork. So far those foods include meatballs, burgers, kebabs, lasagna, pizza, tortelloni, ravioli, empanadas, and meat pies, among other items.

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Authorities say the scandal is a case of fraudulent labeling and does not pose any health risks.

Gunnar Dafgard AB, a family-owned frozen foods company in southwestern Sweden that supplies Ikea’s meatballs in Europe, posted a brief statement on its website saying ‘‘the batch in question has been blocked and we are investigating the situation.’’

Spokesman Ola Larsson said the company was conducting its own DNA tests and wouldn’t comment further until it has those results.